Operation - Section 3 OM3021.3 03/01 Page 3-38 Instrument Panel & Indicator Lights A5. NO POWER This RED “No Retard/No Propel” indicator light indicates a fault has occurred which has eliminated the retarding and propulsion capability. A warning buzzer will also sound. If this condition occurs, the operator should safely stop the truck, move Selector Switch to Neutral, apply the Park Brake, shutdown engine, and notify maintenance personnel immediately. B5. PROPULSION SYSTEM WARNING When this amber indicator is illuminated, the light indicates a “No Propel” or “No Retard” event may be about to occur. It is intended to provide advance notice of these events when possible.
It does not require the operator to stop the truck, but may suggest that truck operation be appropriately modified, in case a red alarm does occur. C5. PROPULSION SYSTEM TEMPERATURE This amber AC Drive System “Temperature Warning” light indicates the drive system temperature is above a certain level. When this condition occurs, the operator should consider modifying truck operation in order to reduce system temperature. The operator is not required to stop the truck at this time. D5. HIGH HYDRAULIC OIL TEMPERATURE This RED warning light indicates high oil temperature in the hydraulic tank. Continued operation could damage components in the hydraulic system.
If this condition occurs, the operator should safely stop the truck, move Selector Switch to Neutral, apply the Park Brake, and operate engine at 1200 - 1500 RPM to reduce system temperature. If temperature gauge (25, Figure 3-6) does not move into the Green range after a few minutes, and the RED overhead indictor light does not go out, notify maintenance personnel immediately. E5. STOP ENGINE This RED engine monitor warning light will illuminate if a serious engine malfunction is detected in the electronic engine control system. Electric propulsion to the wheelmotors will still be available . Dynamic Retarding will still be available if needed to slow or stop the truck.
Stop the truck as quickly as possible in a safe area and apply parking brake. SHUT DOWN THE ENGINE IMMEDIATELY. Additional engine damage is likely to occur if opera- tion is continued. An example of a condition that could cause the Stop Engine light to illuminate: If engine governor senses an overspeed condition, the ECM will close the fuel solenoid and stop the flow of fuel to the engine until engine speed is back within normal operating range.